the fbi is now investigating. >>> in pennsylvania, a judge has until tuesday to rule on a controversial voter i.d. law. at issue is whether the new law disenfranchises voters. some people face obstacles just trying to get the photo identification card. >> reporter: was this easy to get or too hard to get? >> it was very hard to get. >> reporter: 68-year-old doris clark was turned down three times, applying for her pennsylvania voter i.d. card. and every time, she says, the state wanted another document. original birth certificate, original social security card, then she needed her husband's death certificate when a clerk demanded proof of her married name. after four tries she got the card but resented all the obstacles. >> you feel like why am i going through all these things? i'm not bin laden's wife. you know? i've been here all my life. i've been voting since it's been legal for me to vote. >> reporter: clark's testimony in state court in pennsylvania represents a growing legal challenge to voter i.d. laws, specifically how difficult some states have made it for voters to actually g